... Shallow water seismic surveys can present a challenging free surface multiple attenuation problem. In this paper we present the application of a suite of demultiple techniques to data from the Malvinas Basin and demonstrate the effectiveness of this tool kit on the shallow hard water bottom...

... acquisition dither separation applied geoscience deblended data order multiple water bottom Practical Considerations on Planning, Acquiring and Deblending a 3D Triple-Source Survey Shangli Ou, Zachary Lawrence, Irina Gorysheva, Daniel Eke, Xiujun Yang, Vikas Gudipati, Lieve Vanneste, Gboyega Ayeni...

... – 786 , 10.1190/tle34070780.1 . water bottom reservoir characterization water-bottom estimation estimation application acquisition water-bottom event seg international exposition migration annual meeting imaging water-bottom reflection noise free surface multiple energy method...

... ABSTRACT We describe a special tomography workflow that has been implemented in our Yucatan Platform depth imaging 2D project in the Mexican GOM (MGOM). The workflow is designed for a very rugose water bottom like the Yucatan Platform and Escarpment area with very shallow water and very low S...

... ABSTRACT Acquisition of Ocean Bottom Node (OBN) is getting more popular. Besides many advantages, a downside is the poor illumination from primaries, especially close to the water bottom. However, the data is very suitable for using surface multiples to image the subsurface. Usually...

... Li , Y. , G. Chang , B. Hewett , E. Beal , and Z. Yang , 2015 , Detect water velocity variations with direct arrivals and water bottom multiples from 3D subsurface seismic surveys (OBN and DAS-VSP) in Gulf of Mexico : Presented at the 77th Annual...

... modeling total data sparsely source wavelet reflectivity full wavefield migration interpolation upstream oil & gas davydenko artificial intelligence water bottom fwm Full wavefield migration for sparsely sampled 3D data M. Davydenko and D.J. Verschuur, Delft University of Technology...

.... Introduction In time-lapse data, the aim is to detect changes in the subsurface related to production in the reservoir. These area of interest in time-lapse marine data are generally below the water bottom. However, the water layer itself changes between acquisitions. This affects the wavefield propagation...

... years, the shallow water multiple elimination (SWME) method is also developed for tackling multiples where the water bottom is relatively shallow (<100m). Furthermore, poststack wave-equation based multiple prediction and subtraction methodology can be utilized to remove residual multiples...

... velocity (SWAV) at a rig site with ZVSP direct arrivals. We proposed to directly measure SWAV at a rig site with a known water depth by using differential times between primary water bottom multiples (WBM) and direct first arrivals acquired in a marine ZVSP survey. A procedure was developed to process ZVSP...

... Summary In this paper we analyze the impact of water bottom reflection on the near-field hydrophones in a shallow water survey and the consequent error on the reconstruction of the source signature. Then we present a deblending-based approach to attenuate this error. Introduction Airgun...

... to generate a stack and common image gathers (CIG). Then the water bottom is picked and the dip field is scanned from the stack. For well data, we need to obtain the vertical velocity profile at the well location. In the case of check shot data, the velocity can be calculated from the depths and travel times...

... to 450ms below the water bottom. Geologic features in the shallow seismic time slices have modern analogs nearby on shore, including beach ridge complexes, Chenier plain, channels and channel belts. Introduction This is a case history of high resolution seismic data acquired for The Gulf of Mexico...

.... Details refer to Kragh and Christie, 2002) of 0.10 along the water bottom and 0.28 above the reservoir. Introduction Time lapse seismic analysis is now a widely accepted practice used in the oil and gas industry for reservoir monitoring and management. More and more successful time lapse seismic imaging...

... to predictions. Sensitivity to pressure response remains the main uncertainty as the observations in the amplitude data do not match observations from laboratory measurements on core data. bottom node time-lapse observation time shift pressure depletion water bottom sensitivity repeatability upstream...

... moisture and consequently wetlands distribution. Bathymetric lidar data are being used to produce elevation models for the water surface and the water bottom, allowing water depths to be determined for shallow, fresh-water lakes and anastomozing stream channels. Water penetration to depths greater than 6 m...

... reservoir characterization water bottom anisotropy Figure 1: Rock Physics workflow for calculating the bulk and shear moduli of a dry rock, adopted from Xu & Payne, 2009. Using rock physics and full elastic modeling to seismically model complex lithologies John B. Sinton and Mosab Nasser, Maersk Oil...

... ABSTRACT This paper focuses on the attenuation of Water-Layer-Related Multiples (WLRMs) which reflect at least once off the topside of the water bottom and off the water surface. WLRMs are often the most dominant multiples in shallow-water seismic data. We propose a Model-based Water-layer...

... inversion shot gather matrix near-offset data exxonmobil upstream research company reservoir characterization reflection estimation obc data receiver water bottom surface-related multiple verschuur raypath primary estimation upstream oil & gas Primary estimation on OBC data by sparse...

... transport complex isotropic imaging anisotropy checkshot data upstream oil & gas garden bank water bottom checkshot anisotropic model building Anisotropic model building by integrating welltie and checkshot for Garden Banks of GoM Chang Li, Keith Katahara, John Potter, Carter Gehman, Steve...